Attachment plug



Nov;3,1925" 1,560,198`

R.'B.BENJAMIN ATTACHMENT PLUG Filed May l1a. 1922 imumvlwfw- 2f' ELE-5 Patented Nov. 3, 1925.

murenV STAT-Es `mamen PATENT oFFicE.

REUBEN B. BENJAHIDL'OE CHICAGO, ILLINOIS,v .ASSIGNGB4 T0 BENJAMIN ELEIBI I MANUFACTUBI'NGCOIPANY, 0F CHICAGO, ILLINOIS, A COBPUBATION 0F ILLINOIS.

ATTACHIENT PLUG.

Appleman meanyj 1s, vmaa. serial m. 501,863.

\ To' all whom zit may concern vide a Vseparable 'swivel attachment plugy Beit known that I, REUBEN B.: BENJA- iMrN, a citizen of the -United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and `useful Improvements in Attachment Plugs, of.

which will be easy to assemble, durable and eiicient in use, and cheap to manufacture.

Further objects will appear from the dpetailcd description to follow and from the appended claims.

In the drawingsin' which an embodiment of my invention is shown:

Figure 1 is a vertical longitudinal section through myimproved separal'ile swivel at `tachment plug, a part of the handle being shown in full lines,.and a .standard cap 'being shown in dotted lines;

Fig. 2 is asideielevation of thehseparable swivel attachment'plug shown'in Fig. 1, a

portion of the handle being broken away;

Fig. `3 is a top plan view' ofthe plug 'as shown in Fig. 2;

Fig. 4 is a transverse section taken on a line 4-4 of Fig. 1; p

Fig.5 is .av transverse section taken on line 3-3 of Fig. 1; and

Fig. 6 is a plan view of the center contact insulating washer.

Referring now to the drawings in my invention els-illustrated, I provide an insulating base 10, having openings 11 and 12 'therein,arranged to receive blade engaging contacts' 13 and 14 respectively. Openings 15 are provided in the base 10 to permit the insertion ofthe blades 16 `of an attachment plug cap 16 intothe openings 11 and 1 2, in order toelectricallyengage the contacts 'venting relative rotation of the the 13 and 14. A threaded Shen man 17 surrounds the 4base 10 and is rotatably mounted.

thereon by'means of the inwardly extending 'il' flange 18, .IG'Stmg in the annular vgrtmve 1'9 on the top of the base.

A stamping 20 .is .su portedon the upper end of the base 10 an arranged to engage the flange 18joit'the threaded shell contact 17. In order to prevent relative movement of this stamping with relation to thebase, 1t 1s provided with ,the`lugs.21, which are engaged in the notches 22 in the extending portion 23 of the base 10. The stampin 20 lsfalso provided with 'an arm 24dexten in into the opening 12'in `the base, to whic arm'is secured the blade engaging contact 14. The stamping 20 is securely clamped va, gain`st the base by means of the center con-v tact 25 and the insulating washer 26, the

insulating -washer 26 having an openin 27,

projecting portion of the base, thereby reparte. he parts are securely held 1n operative position v means of the eyelet 28, which is preferably molded in the base 10 as shown.

The center contact 25 is provided with y'an arm 29 extending through the opening 27' l in; washerI 26 and into the slot 114 in the base, towhch arm is secured the lcont-act member 13. The contact members 13 and 14 are varranged `to engage the blades of a standard attachment plug cap when they, are 4inserted in the openings 16 in the usual The threadedsliell contact- 17 is provided at its lower end` with an outwardly extend- K ingflange 30, which is secured between thel insulating washers 31 and 32 by means of the ring or casing The'ring or casing 95 33 is pressed tightly over the edges of the vwashers 31 vand 32, thus securing rigidly together' all `of` the various parts of the swivel shell portion of the plug. The flange 30 is provided with portions 3-l, arranged to 1m)` co-operate with openings in the washers A' 31 and 32, to prevent relative movement of l arts.

. e ring or casing 33 is provided with downwardly extending ears 36 on'which is m5 pivoted at 37 the extension handle 38. The

handle is held in lolligitudinal relation to f the plug oy means of the locking member 39, arranged to impositively engage in the opening' 40. The resiliency of theear' 36 110 and the handle 38 allen the handleV to orted thereon., @center ecunsaet` on said placed in any desired angular-position relative to the'plug. f

The base 10 extends somewhat below the washer. in order to prevent friction against. the attachment` plug. cap Whenit.

is desired torotate the in place.

'ln operation the plug may be inserted, by meansof the extension handle, in dee Shades or places. where it would be diiii cult to screw in the usual standard attachmentv plugs,'and the ca, then be inserted, or the cap may he first ineerted in the'plu'g and the plug may then be easily screwed shell with the cap into a receptacle in a deep shade withoutt-wieting the cord, as the handle swivels around thecord 1n screwing the plug into place. After the plug is in place the handle -m'ay he moved te one side as far the shade will permit. `thus giving a freedom Aof.ifnoven'ient tothe .oord and ln'eienting an unnecessary side Strain on the fixture or the socket.

.ll-'hile l have shown but one form of 'my invention it is ohvionx that it may be ernbodied in other forms` revered and' defined by the appended claims."

lVhat. I claim nenw and desire to seeure 1tig-Lettere Patent of the' U. S. is :'-f-

l. An attachment plugcomprising, in combination, a hase, a swivelfshell Contactv surrounding said hase and supported thereon, a center aantast on saidlbase, a blade en'- gaging Contact electrically connected with said oenter Contact, a eeofind hlade engaging Contact electrically Connected with saidl :fsu-neel ehelicontaet, saidewivei shell Contact haring a flange thereon, a' pair o' insulating s Supported onsaid flange, a, easing taping said dises on said flange. and an scribed my ase, a blade enga 'ngcontact electrically connected with sai centercontact, a second blade engaging contactA electrically connected with said swivel shell contact, said swivel shell contact having a flange thereon, a pair of insulating dises supported,

K on opposite sides of said flange, a casing clampingsaid discs onsaid flange, apivoted extension handle secured to said easing, and

ing Contact electrically connected with said/1" swivel shell-eontact,sa1d swivel shell con!-v tact having a lflange thereon,l a pivotedextensionhandle nupported on and instda'ted from said flange, and means supported on said' flange' for' imposiiiirely holding said handle in longitudinal relation with said plug. i 1

4. AAsvfi-vel shelll attachment plug comprising an insulatingbase, a threaded shell ",contact mounted'on said base, an extension `means on said easing cooperating' with said y handle pivotalljv" mounted on saidv threaded shelll Contact. and means for holding said extension handle in alinement with said plug. y

5. lewirel attachment plug comprising en insulating hase, a threaded shell contact swireled with respect 'to said base, an errtenaion handle pivotally mounted on said threaded :shell Contact'. and meansfor im-` positively holding said handle in longi tudinal relation Withrespectto said plug.

nv Witness whereof, I have'hereui'xto suh- REUTEN B. BENJAMIN; i 

